(19)
(11) EP 1 801 821 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.07.2007 Bulletin 2007/30

(43) Date of publication A2:
27.06.2007 Bulletin 2007/26

(21) Application number: 06026273.0

(22) Date of filing: 19.12.2006
(51) International Patent Classification (IPC): 
H01F 17/04(2006.01)
H01F 27/29(2006.01)
 H01F 27/02(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 22.12.2005 JP 2005369812
11.10.2006 JP 2006277828

(71) Applicant: Sumida Corporation
Chuo-ku Tokyo 103-0013 (JP)

(72) Inventor:
  • Oki, Juichi
    Ningyo-cho Chuo-ku Tokyo 103-0013 (JP)

(74) Representative: Schäfer, Matthias W. 
Patentanwalt Schwanseestrasse 43
81549 München
81549 München (DE)

   


(54) Inductance element


(57) An inductance element (10) according to the present invention includes: a drum core (20) provided with an upper flange portion (21), a lower flange portion (23), a columnar leg portion (22) and a wiring frame portion (25) surrounded by the upper flange portion (21), the lower flange portion (23) and the columnar leg portion (22); a coil (40) arranged at wiring frame portion (25) and formed by winding a wire (41); and a resin curing portion (50) formed by curing a mixed material mixing magnetic powders and resin and coating at least the wiring frame portion (25) and the coil (40). In addition, a plurality of terminal members (30a, 30b) as well as a bottom portion (31) and a plurality of peripheral wall portions (32) are included, in which a space portion (35) is formed between the peripheral wall portion (32) and the drum core (20), and the mixed material is filled into the space portion (35) to form the resin curing portion.







Search report